KR20000045024A - Imbalance detecting method of a washing machine - Google Patents
Imbalance detecting method of a washing machine Download PDFInfo
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- KR20000045024A KR20000045024A KR1019980061536A KR19980061536A KR20000045024A KR 20000045024 A KR20000045024 A KR 20000045024A KR 1019980061536 A KR1019980061536 A KR 1019980061536A KR 19980061536 A KR19980061536 A KR 19980061536A KR 20000045024 A KR20000045024 A KR 20000045024A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/48—Preventing or reducing imbalance or noise
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/06—Timing arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/088—Liquid supply arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/02—Water supply
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
본 발명은 세탁기의 언발란스 감지방법에 관한 것으로, 세탁기의 언발란스 탈수행정중 언발란스를 감지하는 언발란스 감지스위치의 온(on)시간이 기준시간을 초과하거나 스위치의 온/오프동작이 반복적으로 이루어지게 되는 경우 언발란스가 발생된 것으로 판단하여 언발란스상태를 헹굼행정으로 보정한 후, 탈수행정을 수행할 수 있도록 한 세탁기의 언발란스 감지방법에 관한 것이다.The present invention relates to a method for detecting an unbalance of a washing machine, wherein an on-balance time of an unbalance detecting switch that detects unbalance during an unbalanced dehydration operation of a washing machine exceeds a reference time or the switch is repeatedly turned on and off. The present invention relates to a method for detecting an unbalance of a washing machine capable of performing a dehydration stroke after correcting an unbalanced state with a rinsing stroke by determining that an unbalance has occurred.
일반적으로 세탁기는 세탁조에 세탁물과 세탁수 그리고 적당한 양의 세제(洗劑)를 넣고 기계적인 물살(water flow)에 의한 충격을 세탁물에 주어 일련의 세탁 및 헹굼, 탈수 등을 자동으로 수행하는 장치이다.In general, a washing machine is a device that automatically performs a series of washing, rinsing, and dehydration by putting laundry, washing water, and an appropriate amount of detergent in a washing tank, and giving the impact of mechanical water flow to the laundry. .
이와 같은 세탁기의 예를 도 1에 의거하여 살펴보면, 캐비닛(10)의 내부에 급수 밸브(12)로부터 급수되는 물을 저수시키는 저수조(14)가 설치되며, 저수조(14)의 내부에는 세탁조(16)가 회전 가능하게 설치되고, 세탁조(16)에는 다수의 구멍(16a)이 형성된다.Referring to an example of such a washing machine based on FIG. 1, a water storage tank 14 for storing water supplied from the water supply valve 12 is installed in the cabinet 10, and the washing tank 16 is installed inside the water storage tank 14. ) Is rotatably installed, and a plurality of holes 16a are formed in the washing tank 16.
한편, 저수조(14)는 현가 장치(18)에 의해 캐비닛(10)의 내부에 매달려 설치되는 것으로, 현가 장치(18)는 걸이봉(18a)을 갖추고 있으며, 걸이봉(18a)의 상단은 캐비닛(10)의 내면 상부에 걸림 유지되고, 걸이봉(18a)의 하단은 저수조(14)의 외주면 하부에 형성되는 걸이편(14a)에 걸림 유지되며, 걸이봉(18a)의 하단에는 스프링(18b)이 하우징(18c)에 의해 감싸여져 있다. 현가 장치(18)는 세탁 및 탈수 중에 발생되는 저수조(14)의 진동 및 흔들림 등을 완충시켜 저수조(14)의 균형을 잡아주고 소음을 방지시켜 주게 된다.On the other hand, the reservoir 14 is installed by hanging the interior of the cabinet 10 by the suspension device 18, the suspension device 18 has a hook rod (18a), the upper end of the hook rod (18a) the cabinet It is held on the upper inner surface of the (10), the lower end of the hook rod (18a) is held by the hook piece (14a) formed on the lower outer peripheral surface of the reservoir 14, the spring (18b) at the lower end of the hook rod (18a) ) Is wrapped by the housing 18c. The suspension device 18 buffers vibration and shaking of the reservoir 14 generated during washing and dehydration to balance the reservoir 14 and prevent noise.
또한, 저수조(14)의 하부에는 베이스(base: 20)가 설치되며, 베이스(20)의 하면에는 모터(22)와, 이 모터(22)의 구동력을 감속 및 단속하여 전달하는 기어 장치(24)가 각각 설치된다. 기어 장치(24)는 세탁조(16)의 바닥에 위치되는 펄세이터(pulsator: 26)를 회전시키기 위한 제 1 구동축(24a)과 세탁조(16)를 회전시키기 위한 제 2 구동축(24b)을 갖추고 있다. 그리고, 기어 장치(24)는 다수의 기어들, 예를 들어 유성기어들 및 링기어의 조합과 제 1 및 제 2 구동축(24a, 24b)중 하나의 회전이 이루어지도록 구동력을 단속하는 도시하지 않은 클러치로 구성되며, 제 1 구동축(24a)은 제 2 구동축(24b)에 감싸여져 있다.In addition, a base 20 is installed at a lower portion of the water storage tank 14, and a gear device 24 is provided on the lower surface of the base 20 to reduce and interrupt the motor 22 and the driving force of the motor 22. Are installed respectively. The gear device 24 has a first drive shaft 24a for rotating the pulsator 26 located at the bottom of the washing tub 16 and a second drive shaft 24b for rotating the washing tub 16. . In addition, the gear device 24 is not shown to control the driving force so that a combination of a plurality of gears, for example, planetary gears and a ring gear, and rotation of one of the first and second drive shafts 24a and 24b are made. It consists of a clutch, and the 1st drive shaft 24a is wrapped by the 2nd drive shaft 24b.
따라서, 사용자가 원하는 세탁 기능을 설정하게 되면, 모터(22)의 구동력을 전달하는 기어 장치(24)의 제 1 구동축(24a)에 의해 펄세이터(26)가 회전되며, 이 펄세이터(26)의 회전에 의해 물살이 발생되어 세탁물의 세탁을 수행하게 된다. 기어 장치(24)의 제 2 구동축(24b)에 의해 세탁조(16)가 회전되면 세탁조(16)의 구멍(16a)을 통하여 물이 저수조(14)로 빠져나가면서 탈수가 수행된다.Therefore, when the user sets the washing function desired by the user, the pulsator 26 is rotated by the first drive shaft 24a of the gear device 24 which transmits the driving force of the motor 22, and the pulsator 26 Water is generated by the rotation of the laundry to perform the laundry. When the washing tub 16 is rotated by the second drive shaft 24b of the gear device 24, the water is drained through the holes 16a of the washing tub 16 while being drained to the reservoir 14.
또한, 세탁기의 탈수행정시 세탁조내에 있는 세탁물의 언발란스분포로 인한 세탁기의 언발런스를 감지하는 제 1 스위칭접점(26)과, 상기 제 1 스위칭접점(26)에서 감지된 신호에 따라 탈수행정의 온/오프동작을 선택적으로 수행할 수 있도록 모터(22)를 제어하는 마이컴(미도시)으로 구성된다. 여기서, 상기 세탁기의 언발런스를 감지하는 제 1 스위칭접점(26)의 온/오프동작은 세탁기의 탈수행정을 위한 세탁조(16)의 회전시 세탁조(16)내에 있는 세탁물의 치우침으로 인해 세탁조(16)가 저수조(14)에 접촉되어 저수조(14)의 요동에 따라 언발런스레버(25)가 연동하여 흔들림으로써, 언발런스레버(25)에 연결된 제 1스위칭접점(26)이 온/오프된다. 즉, 언발런스레버(25)의 움직임에 따른 제 1 스위칭접점(26)의 온/오프스위칭신호에 따라 세탁기의 언발런스를 감지하게 되는 것이다.In addition, the first switching contact 26 for detecting the unbalance of the washing machine due to the unbalance distribution of the laundry in the washing tank during the dehydration operation of the washing machine, and the on / off of the dehydrating stroke according to the signal detected by the first switching contact 26. A microcomputer (not shown) for controlling the motor 22 to selectively perform the off operation. Here, the on / off operation of the first switching contact 26 for detecting the unbalance of the washing machine is the washing tank 16 due to the deflection of the laundry in the washing tank 16 during the rotation of the washing tank 16 for the dehydration operation of the washing machine. Is in contact with the reservoir 14 and the unbalance lever 25 is interlocked with the shaking of the reservoir 14, so that the first switching contact 26 connected to the unbalance lever 25 is turned on / off. That is, the unbalance of the washing machine is detected according to the on / off switching signal of the first switching contact 26 according to the movement of the unbalance lever 25.
이러한 종래 기술에 따른 언발란스 감지방법에 대하여 도 2를 참조하여 살펴보기로 하자. 도 2는 종래 기술에 따른 세탁기의 언발란스 감지방법에 대한 동작 플로우챠트를 나타낸 도면으로써, 세탁행정방법에 대한 플로우는 생략하고 헹굼행정과, 탈수 행정시 세탁물의 언발런스상태를 감지하는 방법 및 언발런스상태 감지시 세탁물의 언발런스 보정동작의 플로우를 도시한 것이다.This unbalance detection method according to the prior art will be described with reference to FIG. 2. 2 is a flowchart illustrating an unbalance detection method of a washing machine according to the prior art, in which a flow for the washing administration method is omitted and a rinsing stroke and a method for detecting an unbalanced state of laundry during a dehydration stroke and an unbalance state are detected The flow of the unbalance correction operation of the laundry is shown.
먼저, 세탁행정이 완료되고 헹굼동작을 하기 위한 헹굼수가 세탁기의 세탁조(16)내로 급수되면, 행굼동작을 기 설정된 시간동안 수행한다(S101).First, when the washing operation is completed and the rinsing water for the rinsing operation is supplied into the washing tank 16 of the washing machine, the rinsing operation is performed for a predetermined time (S101).
이어, 헹굼동작이 완료되면(S102) 세탁조(16)내의 세탁수를 완전히 배수시키고(S103), 배수가 완료되면(S104) 마이컴의 제어에 따라 일정시간동안 모터(22)를 구동하여 예비탈수동작을 수행하게된다(S105). 여기서, 예비탈수동작은 상술한 바와 같이 세탁물의 언발란스 상태를 감지하기 위한 동작이다.Subsequently, when the rinsing operation is completed (S102), the washing water in the washing tank 16 is completely drained (S103), and when the draining is completed (S104), the motor 22 is driven for a predetermined time under the control of the microcomputer to perform a dehydration operation. It will be performed (S105). Here, the preliminary dehydration operation is an operation for detecting the unbalanced state of the laundry as described above.
이어, 상기 예비탈수동작을 수행하는 동안 마이컴은 세탁기의 언발런스상태를 감지하는 제 1 스위칭접점(26)의 온/오프상태를 검출하게 된다(S106).Subsequently, during the preliminary dehydration operation, the microcomputer detects an on / off state of the first switching contact 26 that detects an unbalanced state of the washing machine (S106).
이어, 상기 제 1 스위칭접점(26)의 온/오프상태 검출결과에 따른 제 1 스위칭접점(26)의 온/오프동작이 반복적으로 이루어지는지를 판단한다(S107).Subsequently, it is determined whether the on / off operation of the first switching contact 26 is repeatedly performed according to the on / off state detection result of the first switching contact 26 (S107).
상기 판단결과, 제 1 스위칭접점(26)의 반복적인 온/오프동작이 검출되지 않게 되면 마이컴은 모터(22)를 계속적으로 구동시켜 세탁기의 본탈수행정을 수행하도록 제어한다(S108),As a result of the determination, when the repetitive on / off operation of the first switching contact 26 is not detected, the microcomputer continuously drives the motor 22 to perform the main dehydration operation of the washing machine (S108).
한편 상기 판단결과 제 1 스위칭접점(26)의 반복적인 온/오프동작이 검출되게 되면, 마이컴은 세탁물이 세탁조(16)내에 한쪽으로 치우쳐있는 언발런스상태로 판단하여 모터(22)의 구동을 정지시키고 세탁조(16)내에 헹굼수를 재급수하여(S109) 헹굼행정을 통해 세탁조(16)내의 세탁물 언발란스 보정동작을 수행하게 된다.On the other hand, if the repeated on / off operation of the first switching contact 26 is detected as a result of the determination, the microcomputer determines that the laundry is in an unbalanced state in which the laundry is biased to one side in the washing tank 16, and stops the driving of the motor 22. The rinsing water is resupplied in the washing tank 16 (S109) to perform the laundry unbalance correction operation in the washing tank 16 through the rinsing cycle.
이어, 헹굼행정을 통해 세탁물의 언발란스보정동작이 완료되면 즉, 헹굼행정이 완료되면, 상기한 세탁기의 언발런스 감지동작을 반복적으로 수행한다.Subsequently, when the unbalance correction operation of the laundry is completed through the rinsing cycle, that is, when the rinsing cycle is completed, the unbalance detection operation of the washing machine is repeatedly performed.
이와 같은 세탁물의 언발런스 감지동작을 통해서도 언발런스감지가 일정횟수 이상 반복되는 경우에는 세탁기의 모든 동작을 정지시키고 사용자가 직접 세탁물의 언발런스를 보정할 수 있도록 경보장치를 통해 경고하게 된다.If the unbalance detection is repeated even more than a certain number of times through the unbalance detection operation of the laundry, all the operations of the washing machine are stopped and the user is warned through an alarm device so that the user can directly correct the unbalance of the laundry.
그리고, 상기 S107단계 즉, 본탈수동작을 수행하는 동안에도 제 1 스위칭접점(26)의 온/오프상태가 계속적으로 감지되면, 모터(22)를 정지시켜 현재 진행중인 본 탈수행정을 중단시키고 상기 S109단계부터 다시 동작을 수행하여 세탁물의 보정동작을 순차적으로 수행하게 되는 것이다.In addition, if the on / off state of the first switching contact 26 is continuously detected even during the step S107, that is, during the main dehydration operation, the motor 22 is stopped to stop the present dewatering operation in progress and the step S109. By performing the operation again from the step is to perform the laundry correction operation sequentially.
그러나, 이러한 종래 기술에 따른 세탁기의 언발란스 감지방법은 단지 스위치의 온/오프동작의 반복여부만을 감지하여 언발란스 발생을 판단하기 때문에 언발란스양이 너무커서 언발란스 감지스위치가 계속적으로 온(ON)되는 경우에는 언발란스가 심하게 발생되었음에도 불구하고, 언발란스가 발생되지 않은 것으로 판단하여 본 탈수행정을 수행함으로써, 모터에 과부하가 발생되는 문제점과 탈수행정시 탈수조 및 저수조의 충돌로 인한 소음발생 및 세탁조 및 저수조의 커다란 손상이 발생되는 문제점이 있다.However, the unbalance detection method of the washing machine according to the related art detects only the repetition of the on / off operation of the switch, and thus determines the occurrence of unbalance. When the unbalance detection switch is continuously turned on because the amount of unbalance is too large, Even though the unbalance was badly generated, this dehydration stroke was performed because it was judged that the unbalance was not generated. Thus, the problem of overloading the motor and the noise generated by the collision of the dehydration tank and the reservoir during the dehydration stroke, There is a problem that damage occurs.
따라서, 본 발명은 상기한 종래 기술에 따른 제반 문제점을 해결하기 위하여 안출한 것으로 본 발명의 목적은 세탁기의 언발란스 탈수행정중 언발란스를 감지하는 언발란스 감지스위치의 온(on)시간이 기준시간을 초과하거나 스위치의 온/오프동작이 반복적으로 이루어지게 되는 경우 언발란스가 발생된 것으로 판단하여 언발란스상태를 헹굼행정으로 보정한 후, 탈수행정을 수행할 수 있도록 함으로써, 보다 정확한 언발란스를 감지할 수 있도록 한 세탁기의 언발란스 감지방법을 제공함에 있다.Accordingly, an object of the present invention is to solve the above problems according to the prior art, an object of the present invention is that the on time of the unbalance detection switch for detecting the unbalance during the unbalance dehydration operation of the washing machine exceeds the reference time or When the on / off operation of the switch is repeatedly performed, it is determined that an unbalance has occurred, the unbalance state is corrected by a rinsing stroke, and then a dehydration stroke can be performed, so that a more accurate unbalance can be detected. It is to provide an unbalance detection method.
도 1은 종래 기술에 따른 언발란스 감지장치가 장착된 세탁기의 구성을 개략적으로 나타낸 단면도1 is a cross-sectional view schematically showing the configuration of a washing machine equipped with an unbalance detection device according to the prior art
도 2는 종래 기술에 따른 세탁기의 언발란스 감지방법에 대한 동작플로우챠트를 나타낸 도면2 is a flowchart illustrating an operation of a method for detecting an unbalance of a washing machine according to the related art.
도 3은 본 발명에 따른 세탁기의 언발란스 감지방법에 대한 동작 플로우챠트를 나타낸 도면3 is a flowchart illustrating an operation of a method for detecting an unbalance of a washing machine according to the present invention.
♣ 도면의 주요 부분에 대한 부호의 설명 ♣♣ Explanation of symbols for the main parts of the drawing ♣
11 : 세탁기 12 : 저수조11: washing machine 12: reservoir
13 : 세탁조 14 : 캐비닛13: washing tank 14: cabinet
15 : 언발런스레버 16, 17 : 스위칭접점15: Unbalance lever 16, 17: switching contact
18 : 모터 19 : 풀리18: motor 19: pulley
20 : 벨트 21 : 클러치20 belt 21 clutch
22 : 회전축 23 : 펄세이터22: axis of rotation 23: pulsator
24 : 배수밸브 25 : 배수호스24: drain valve 25: drain hose
상기한 목적을 달성하기 위한 본 발명에 따른 세탁기의 언발란스 감지방법은 세탁조, 저수조, 모터 및 상기 세탁조와 저수조 사이에 장착되어 탈수시 언발란스상태를 감지하는 안발란스 감지스위치를 구비한 세탁기의 언발란스 감지방법에 있어서, 세탁 및 헹굼행정이 완료되어 배수가 되면, 상기 모터를 구동하여 세탁물의 언발란스를 감지하기 위한 언발란스 탈수행정을 일정시간동안 수행하는 단계와; 상기 언발란스 탈수행정중 상기 언발란스 감지스위치의 온/오프상태를 검출하는 단계와; 검출결과, 상기 언발란스 감지스위치가 온되는 시점부터 오프될 때 까지의 시간을 카운팅하여 기 설정된 기준시간과 비교하여 기준시간을 초과하는지와 언발란스 감지스위치의 온/오프스위칭이 일정횟수 반복적으로 이루어지는를 판단하는 단계와; 판단결과, 감지스위치의 온/오프스위칭시간이 기준시간을 초과하고, 감지스위치의 온/오프스위칭이 일정횟수 이상 반복적으로 이루어지는 경우 언발란스가 발생된 것으로 판단하여 세탁조내로 세탁수를 재 급수하여 언발란스 보정을 위한 헹굼행정을 재 실시하는 단계로 이루어지고, 상기 판단하는 단계에서 판단결과, 감지스위치의 온/오프스위칭시간이 기준시간을 초과하지 않고, 감지스위치의 온/오프스위칭이 일정횟수 이상 반복적으로 이루어지지 않게 되는 경우에는 언발란스가 발생되지 않은 것으로 판단하여 상기 모터를 구동하여 세탁기의 본탈 수 행정을 수행하는 단계를 더 구비함을 특징으로 한다.Unbalance detection method of the washing machine according to the present invention for achieving the above object is an unbalance detection method of a washing machine equipped with a washing tank, a storage tank, a motor and an unbalance detection switch for detecting an unbalance state when dewatering is mounted between the washing tank and the storage tank. When the washing and rinsing stroke is completed and drained, the step of performing the unbalance dehydration stroke for a predetermined time to detect the unbalance of the laundry by driving the motor; Detecting an on / off state of the unbalance detection switch during the unbalance dehydration operation; As a result of the detection, the time from when the unbalance detection switch is turned on to off is counted to determine whether the reference time is exceeded compared to a preset reference time and whether the on / off switching of the unbalance detection switch is repeatedly performed a predetermined number of times. Steps; As a result of determination, when the on / off switching time of the sensing switch exceeds the reference time and the on / off switching of the sensing switch is repeatedly performed for a predetermined number of times or more, it is determined that an unbalance has occurred and the water is re-watered into the washing tank to correct the unbalance. Re-running the rinsing stroke for the step, the determination result in the determination step, the on / off switching time of the sensing switch does not exceed the reference time, the on / off switching of the sensing switch repeatedly a predetermined number of times or more If it is not made, it is characterized in that it further comprises the step of performing a dehydration stroke of the washing machine by driving the motor to determine that the unbalance is not generated.
이하, 본 발명에 따른 세탁기의 언발란스 감지방법에 대한 바람직한 일실시예를 첨부한 도면을 참조하여 살펴보기로 한다.Hereinafter, a preferred embodiment of a method for detecting an unbalance of a washing machine according to the present invention will be described with reference to the accompanying drawings.
도 3은 본 발명에 따른 세탁기의 언발란스 감지방법에 대한 동작 플로우챠트를 나타낸 도면이다.3 is a flowchart illustrating an operation of a method for detecting an unbalance of a washing machine according to the present invention.
먼저, 세탁행정이 완료되고 헹굼동작을 하기 위한 헹굼수가 세탁기의 세탁조(16)내로 급수되면, 헹굼동작을 기 설정된 시간동안 수행한다(S201).First, when the washing operation is completed and the rinsing water for the rinsing operation is supplied into the washing tank 16 of the washing machine, the rinsing operation is performed for a predetermined time (S201).
이어, 헹굼동작이 완료되면(S202), 세탁조(16)내의 세탁수를 완전히 배수시키고(S103), 배수가 완료되면(S204) 마이컴의 제어에 따라 일정시간동안 모터(18)를 구동하여 예비탈수동작을 수행하게 된다(S205). 여기서, 예비탈수동작은 상술한 바와 같이 세탁물의 언발란스 상태를 감지하기 위한 동작이다.Subsequently, when the rinsing operation is completed (S202), the washing water in the washing tank 16 is completely drained (S103), and when the draining is completed (S204), the motor 18 is driven for a predetermined time under the control of the microcomputer to dehydrate the water. The operation is performed (S205). Here, the preliminary dehydration operation is an operation for detecting the unbalanced state of the laundry as described above.
이어, 상기 예비탈수동작을 수행하는 동안 마이컴은 세탁기의 언발런스상태를 감지하는 도 1에 도시된 제 1 스위칭접점(26)의 온/오프상태를 검출하게 된다(S206).Subsequently, during the preliminary dehydration operation, the microcomputer detects the on / off state of the first switching contact 26 shown in FIG. 1 which detects an unbalanced state of the washing machine (S206).
이어, 상기 제 1 스위칭접점(26)이 온되었는가를 판단하고(S207), 판단결과, 제 1 스위칭접점(26)이 일정시간동안 온되지 았았을 경우에는 언발란스가 발생되지 않은 것으로 판단하여 모터(18)를 구동하여 세탁기의 본 탈수행정을 수행하게 되고, 반대로, 상기 판단결과, 제 1 스위칭접점(26)에 온되었을 경우에는 제 1 스위칭접점(26)의 온(ON)시간을 카운팅하고, 카운팅된 제 1 스위칭접점(26) 온시간이 기 설정된 기준시간을 초과하는지를 비교 판단하게 되는 것이다(S208). 즉, 제 1 스위칭접점(26)이 온되어 오프될 때까지의 시간을 카운팅하여 카운팅된 시간을 기 설정된 기준시간과 비교하게 되는 것이다. 여기서, 일반적으로 제 1 스위칭접점(26)이 온되어 오프될 때까지의 시간은 대략 500mS정도이다. 따라서, 상기 기준시간은 500mS에서 1Sec정도로 설정하면 될 것이다.Subsequently, it is determined whether the first switching contact 26 is turned on (S207), and when it is determined that the first switching contact 26 is not turned on for a predetermined time, it is determined that unbalance has not occurred and the motor ( 18) to perform the main dehydration operation of the washing machine, on the contrary, when it is determined that the first switching contact 26 is turned on, the ON time of the first switching contact 26 is counted. The counted first switching contact 26 is compared to determine whether the on time exceeds a predetermined reference time (S208). That is, by counting the time until the first switching contact 26 is turned on and off, the counted time is compared with the preset reference time. Here, generally, the time until the first switching contact 26 is turned on and off is about 500 mS. Therefore, the reference time may be set to about 1Sec at 500mS.
비교판단결과, 제 1 스위칭접점(26)의 온시간이 기 설정된 기준시간을 초과하게 되는 경우 언발란스가 발생된 것으로 판단하여 모터(18)의 구동을 정지시킨 후, 급수밸브를 구동하여 세탁조내로 세탁수를 재 급수하여(S211) 언발란스 보정을 위한 헹굼행정을 재 실시하게 되는 것이다(S201).As a result of the comparison judgment, when the on time of the first switching contact 26 exceeds the preset reference time, it is determined that unbalance has occurred, and after the driving of the motor 18 is stopped, the water supply valve is driven to wash in the washing tank. The water is re-supplied (S211) to re-run the rinsing stroke for the unbalance correction (S201).
한편, 상기 S208단계에서 언발란스 감지스위치 즉, 제 1 스위칭접점(26)의 온시간이 기 설정된 기준시간을 초과하지 않은 경우에는 제 1 스위칭접점(26)의 온오프동작이 반복적으로 이루어지는지를 판단하게 된다(S209).On the other hand, when the on-balance of the unbalance detection switch, that is, the first switching contact 26 does not exceed the preset reference time in step S208, it is determined whether the on-off operation of the first switching contact 26 is repeatedly performed. (S209).
판단결과, 감지스위치(26)의 온/오프동작이 반복적으로 이루어지지 않게 되는 경우에는 언발란스가 발생되지 않은 것으로 판단하여 모터(18)를 구동하여 본 탈수행정을 수행하고(S210) 반대로, 감지스위치(26)의 온/오프동작이 반복적으로 이루어지게 되는 경우에는 언발란스가 발생된 것으로 판단하여 모터(18)의 구동을 정지시켜 안발란스 탈수동작을 정지시킨 후, 세탁조내로 세탁수를 급수하게 된다(S211). 즉, 세탁수를 급수하여 헹굼행정을 재 실시하게 되는 것이다.As a result of determination, when the on / off operation of the sensing switch 26 is not repeatedly performed, it is determined that unbalance has not occurred and the motor 18 is driven to perform this dehydration operation (S210). When the on / off operation of (26) is repeatedly performed, it is determined that the unbalance has been generated, the driving of the motor 18 is stopped to stop the debalance dehydration operation, and the washing water is supplied into the washing tank. S211). In other words, the washing water is supplied again to rinse administration.
결국, 본 발명에 따른 세탁기의 언발란스 감지방법은 언발란스를 감지하는 언발란스 감지스위치 즉, 제 1 스위칭접점(26)이 온되어 오프될 때 까지의 시간을 기 설정된 기준시간과 비교하여 그 시간이 기준시간을 초과하게 되는 경우와, 제 1 스위칭접점(26)의 온/오프동작이 일정횟수 이상 반복적으로 스위칭되는 경우에는 언발란스가 발생된 것으로 판단하여 세탁수를 재 급수한 후, 언발란스 보정동작을 위한 헹굼행정을 재 실시하게 되는 것이다.As a result, the unbalance detection method of the washing machine according to the present invention compares the time until the unbalance detection switch that detects unbalance, that is, the first switching contact 26 on and off, is compared with a preset reference time. In the case of exceeding and when the on / off operation of the first switching contact 26 is repeatedly switched more than a predetermined number of times, it is determined that the unbalance has occurred, and the washing water is re-supplied and then rinsed for the unbalance correction operation. The administration will be redone.
상술한 바와 같이 본 발명에 따른 세탁기의 언발란스 감지방법은 언발란스를 감지하는 언발란스 감지스위치 즉, 제 1 스위칭접점이 온되어 오프될 때까지의 시간을 기 설정된 기준시간과 비교하여 그 시간이 기준시간을 초과하게 되는 경우와, 제 1 스위칭접점의 온/오프동작이 일정횟수 이상 반복적으로 스위칭되는 경우에는 언발란스가 발생된 것으로 판단하여 세탁수를 재 급수한 후, 언발란스 보정동작을 위한 헹굼행정을 재 실시함으로써, 보다 정확한 언발란스발생을 감지할 수 있는 것이다.As described above, the unbalance detection method of the washing machine according to the present invention compares the unbalance detection switch that detects the unbalance, that is, the time until the first switching contact is turned on and off with a preset reference time, and the time is determined as the reference time. In the case of exceeding and when the on / off operation of the first switching contact is repeatedly switched more than a certain number of times, it is determined that an unbalance has occurred, and the washing water is re-supplied, and the rinsing stroke for the unbalance correction operation is performed again. By doing so, it is possible to detect more accurate unbalance occurrence.
Claims (2)
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| KR1019980061536A KR20000045024A (en) | 1998-12-30 | 1998-12-30 | Imbalance detecting method of a washing machine |
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| KR1019980061536A KR20000045024A (en) | 1998-12-30 | 1998-12-30 | Imbalance detecting method of a washing machine |
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| CN111074483A (en) * | 2018-10-19 | 2020-04-28 | 青岛海尔洗衣机有限公司 | Unbalance detection control method for washing machine |
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| CN111074483A (en) * | 2018-10-19 | 2020-04-28 | 青岛海尔洗衣机有限公司 | Unbalance detection control method for washing machine |
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